RHEOSTATIC STABILISATION OF A CHOPPER-CONTROLLED BRAKE FOR TRACTION DRIVES

This paper describes a means of dealing with the compensating for line-voltage decreases in chopper-controlled regenerative-brake equipment. The method of correction involves using a rheostatic brake resistor which is commonly available in such equipment and requires no extra power electronic circuit components. Electric braking can be maintained under all specified line-voltage conditions, as well as with a short circuit on the power supply line. With this arrangement full protection of the traction and chopper equipment is provided. A fast acting controller is proposed consisting of a closed-loop peak-current inner feedback loop with an outer loop controlling average armature current. Results of practical tests on a 250 A 400 V chopper are supported by numerically predicted results, obtained using a digital computer.

• Corporate Authors:

  Institution of Electrical Engineers

  Savoy Place
  London WC2R 0BL, NY  England  10016-5997
• Authors:
  • Allen, J
• Conference:
  • Institution of Electrical Engineers, Proc Part B
• Publication Date: 1984-9

Media Info

• Pagination: p. 190-194
• Serial:
  • Volume: 131B
  • Issue Number: 5

Subject/Index Terms

• TRT Terms: Chopper circuits; Electric power conditioning; Overvoltage; Propulsion; Protection; Regenerative braking; Safety equipment; Vehicle power plants; Voltage regulation
• Uncontrolled Terms: Propulsion systems; Protective equipment
• Old TRIS Terms: Choppers
• Subject Areas: Public Transportation; Safety and Human Factors; Security and Emergencies; Vehicles and Equipment;

Filing Info

• Accession Number: 00391514
• Record Type: Publication
• Source Agency: British Railways
• Files: TRIS
• Created Date: Jan 30 1985 12:00AM